Yang Kebing,Shao Yanrui,Xie Li,Bai Xinguo,Zhao Ke,Cao Chengcheng
Issue:
Volume 2, Issue 1, June 2020
Pages:
1-6
Received:
31 May 2020
Accepted:
15 June 2020
Published:
28 June 2020
Downloads:
Views:
Abstract: Based on the in-depth analysis of the conductive network of rock and the principle of equivalent resistance, the unit volume model of rock is established. The rock resistivity response equation is derived on the basis of straightening out the relationship between the macropores and the micropores connected with the pore water, and a new rock resistivity response equation is proposed in combination with the regression results of the single rock sample in the logging rock experiment. In this paper, the response equation of rock resistivity is preliminarily proved by the method of inverse proof, and the physical meaning of the parameters of the new formula is analyzed in depth. According to the research knowledge in the field of rock resistivity for many years, the new formula is tested, and the results show that the new formula is in line with the research results in the field. The new formula considers that the rock resistivity and the connected pore water volume are power functions, which solves some unclear problems in the rock resistivity response equation for many years. The parameter of the formula is the intrinsic attribute parameter of rock, which has certain use value. According to the new formula, the formula of calculating reservoir water saturation by using radial resistivity ratio has achieved certain effect in practical application, which shows that the new formula has not only theoretical significance, but also practical application significance, and is worth further promotion and use.Abstract: Based on the in-depth analysis of the conductive network of rock and the principle of equivalent resistance, the unit volume model of rock is established. The rock resistivity response equation is derived on the basis of straightening out the relationship between the macropores and the micropores connected with the pore water, and a new rock resist...Show More
